CN205277357U - Two -way polish rod sealing device of high temperature and high pressure - Google Patents
Two -way polish rod sealing device of high temperature and high pressure Download PDFInfo
- Publication number
- CN205277357U CN205277357U CN201521124506.XU CN201521124506U CN205277357U CN 205277357 U CN205277357 U CN 205277357U CN 201521124506 U CN201521124506 U CN 201521124506U CN 205277357 U CN205277357 U CN 205277357U
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- packing
- filler
- high temperature
- fairlead
- stuffing box
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Abstract
The utility model relates to a two -way polish rod sealing device of high temperature and high pressure, including the gland packing, gland packing upper end flap has the pressure cap, the fixed intercommunication uide bushing of port under the gland packing, uide bushing rotate with the flange joint chair through guide casing pipe down and link to each other, and the through -hole of symmetry is offered on gland packing upper portion, and the through -hole internal fixation links to each other has filler barrel, and it has the filler lead screw to peg graft in filler barrel, and the filler piston has been installed to filler lead screw the inner, and the outer end connects with filler barrel through the filler nut soon, the oil well polished rod on by the gland packing port department insert, stretch out by the flange joint chair through the uide bushing. This application simple structure, sealing performance is good, the high pressure resistant 25Mpa that reaches, the packing packs to the graininess, and the polished rod sealing performance is better, change the packing at present from the top, change horizontal two -way change packing into, change the packing, do not need to empty, take the gas injection and seal the function, can seal valve during the thermal production well gas injection.
Description
Technical field
The application relates to a kind of polished rod sealer, particularly relates to a kind of high temperature high voltage resistant bi-directional light rod sealer.
Background technology
The sealing structure of existing oil-well optical rod sealing apparatus is usually made up of the rubber packing of packing box and pressure cap and annular, and the pressure of pressured cap makes rubber packing generation radial deformation thus being full of in the gap between polished rod and packing box, plays sealing function. When rubber packing abrasion exceeds certain limit, it is necessary to stop well, the packing of serious wear is taken out and changes new packing. Changing packing is a very numerous and diverse job, not only adds the labor intensity of workman, also affects the normal production of oil well, even draws more oil well failure, increase more workload.
In prior art, publication number is CN95234681.8, and name is called the Chinese utility model patent of a kind of oil-well optical rod sealing apparatus, discloses and a kind of can add strip packing and the polished rod sealer that can prevent pressure cap from reversing continuously. Although this sealer have employed the technical scheme that can add packing continuously, but its packing box remains as cylinder, when packing can not compensate after wearing and tearing automatically, also again to add new packing, and effect is not ideal in actual applications; Publication number is CN01241925.7, utility model name is called automatic core adjusting continuous adding packing box, packing needs certain axial pre tightening force otherwise cannot realize reliably sealing when sealing, and cannot realize the pretightning force of packing with regard to said structure, so scheme is inherently infeasible at all.
Summary of the invention
The purpose of the application is in that proposing a kind of packing filling that changes fills direction, does not need emptying when changing packing, the high temperature high voltage resistant bi-directional light rod sealer of good stability.
The purpose of the application is achieved in that high temperature high voltage resistant bi-directional light rod sealer, including stuffing box, described stuffing box upper port is stamped pressure cap, described stuffing box lower port fixing connection fairlead, it is rotatedly connected by guide thimble and flange joint chair under fairlead, the through hole of symmetry is offered on stuffing box top, be fixedly linked in through hole filling tube, filling fibers thick stick it is plugged with in filling tube, filler leading screw the inner is equiped with filler piston, outer end is spun by filler nut and filling tube, oil well polished rod is inserted by stuffing box upper port, stretch out by flange joint chair through fairlead.
Owing to implementing technique scheme, the application simple in construction, good seal performance, high pressure resistant up to 25Mpa; Packing filling is graininess, and polished rod seal performance is better; Changing packing from above at present, change laterally two-way replacing packing into; Change packing, it is not necessary to emptying; Band gas injection sealing function, can sealed valve during thermal production well gas injection; High temperature resistant packing adopts high-temperature resistant aramid fiber packing, up to heat-resisting 400 DEG C.
The application reasonable and compact in structure, can make packing be greatly prolonged service life, and can be used on hydrops gas well, be suitable for promoting the use of.
Accompanying drawing illustrates: the concrete structure of the application is provided by following drawings and Examples:
Fig. 1 is the structural representation of high temperature high voltage resistant bi-directional light rod sealer.
Legend: 1, filler leading screw, 2, filling tube, 3, filler piston, 4, pressure cap, 5, pressure pad, 6, stuffing box, 7, fairlead, 8, guide thimble, 9, high temperature resistant packing, 10, flange joint chair.
Detailed description of the invention:
The application, not by the restriction of following embodiment, can determine specific embodiment according to the technical scheme of the application and practical situation.
Embodiment: as shown in Figure 1, high temperature high voltage resistant bi-directional light rod sealer includes stuffing box 6, described stuffing box 6 upper port is stamped pressure cap 4, described stuffing box 6 lower port fixing connection fairlead 7, fairlead is rotatedly connected by guide thimble 8 and flange joint chair 10 for 7 times, and the through hole of symmetry is offered on stuffing box 6 top, be fixedly linked in through hole filling tube 2, being plugged with filling fibers thick stick 1 in filling tube 2, filler leading screw 1 the inner is equiped with filler piston 3, and outer end is spun by filler nut and filling tube 2. Oil well polished rod is inserted by stuffing box 6 upper port, stretches out by flange joint chair 10 through fairlead 7.
Being filler cavity between described stuffing box 6 and oil well polished rod, this filler cavity and filling tube 2 turn on, and graininess packing filling is entered filler cavity by filling tube 2.
Described fairlead 7 outer wall offers external screw thread, and its outer guide thimble 8 that is connected with, described guide thimble 8 lower port and flange joint chair 10 top spin.
Being provided with high temperature resistant packing 9 in flange joint chair 10, described high temperature resistant packing 9 is high temperature aramid fiber packing. Described high temperature resistant packing 9 center offers the perforate passed through for oil well polished rod, is provided with sealed valve between aforementioned fairlead 7 lower surface and high temperature resistant packing 9 upper port.
Described sealed valve includes arranging up and down, relatively turnable two diaphragm seals, wherein top seal sheet and fairlead 7 lower surface are fixedly linked, lower seal sheet gland is in aforementioned high temperature resistant packing 9 upper surface, offering the pore of correspondence on two diaphragm seals, the pore on described two diaphragm seals turns on the inside of fairlead 7 and high temperature resistant packing 9 respectively.
During use, when normal oil recovery if it find that polished rod has race oil or oil leakage phenomenon, filler leading screw 1 turns clockwise, and injects granular filler in stuffing box 6, until polished rod does not run oil leakage oil and just stops. If filler leading screw 1 turns out granular filler after rotating to bottom and used up, then again add new granular filler again.
Want first shutdown of pumping machine when adding new granular filler; stuffing box 6 is rotated to the direction of (pass); after aforementioned gas holes is completely not overlapping; again filler leading screw 1 is released together with filler piston 3; then just granular filler is joined by certain amount and go inside filling tube 2, again filler leading screw 1 and filler piston 3 are installed after adding, filling tube nut is tightened; again stuffing box 6 is rotated return, aforementioned gas holes overlapping conducting to the direction of (opening) after all installing.
When thermal production well needs steam injection, stuffing box 6 to be rotated to the direction of (pass), firmly high temperature resistant for gas injection packing 9 be compressed, wait gas injection. When gas injection at the beginning, staff does not first leave, do not have after a period of time will be observed gas leak phenomenon further out.
After steam injection is complete, then stuffing box 6 is rotated to origin-location to the direction of (opening), then start oil pumping machine oil pumping.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease inessential technical characteristic according to actual needs, meet the needs of different situations.
Claims (5)
1. a high temperature high voltage resistant bi-directional light rod sealer, including stuffing box, described stuffing box upper port is stamped pressure cap, it is characterized in that: described stuffing box lower port fixing connection fairlead, it is rotatedly connected by guide thimble and flange joint chair under fairlead, the through hole of symmetry is offered on stuffing box top, be fixedly linked in through hole filling tube, filling fibers thick stick it is plugged with in filling tube, filler leading screw the inner is equiped with filler piston, outer end is spun by filler nut and filling tube, and oil well polished rod is inserted by stuffing box upper port, stretches out by flange joint chair through fairlead.
2. high temperature high voltage resistant bi-directional light rod sealer as claimed in claim 1, it is characterised in that: being filler cavity between described stuffing box and oil well polished rod, this filler cavity turns on filling tube, and graininess packing filling is entered filler cavity by filling tube.
3. high temperature high voltage resistant bi-directional light rod sealer as claimed in claim 1, it is characterised in that: described fairlead outer wall offers external screw thread, and its outer guide thimble that is connected with, described guide thimble lower port and flange joint chair top spin.
4. high temperature high voltage resistant bi-directional light rod sealer as claimed in claim 1, it is characterized in that: in flange joint chair, be provided with high temperature resistant packing, described high temperature resistant packing center offers the perforate passed through for oil well polished rod, is provided with sealed valve between aforementioned fairlead lower surface and high temperature resistant packing upper surface.
5. high temperature high voltage resistant bi-directional light rod sealer as claimed in claim 4, it is characterized in that: described sealed valve includes arranging up and down, relatively turnable two diaphragm seals, wherein top seal sheet and fairlead lower surface are fixedly linked, lower seal sheet gland is in aforementioned high temperature resistant packing upper surface, offering the pore of correspondence on two diaphragm seals, the pore on described two diaphragm seals turns on the inside of fairlead and high temperature resistant packing respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521124506.XU CN205277357U (en) | 2015-12-31 | 2015-12-31 | Two -way polish rod sealing device of high temperature and high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521124506.XU CN205277357U (en) | 2015-12-31 | 2015-12-31 | Two -way polish rod sealing device of high temperature and high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277357U true CN205277357U (en) | 2016-06-01 |
Family
ID=56061940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521124506.XU Expired - Fee Related CN205277357U (en) | 2015-12-31 | 2015-12-31 | Two -way polish rod sealing device of high temperature and high pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205277357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762439A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | Device for automatically generating sealing force |
-
2015
- 2015-12-31 CN CN201521124506.XU patent/CN205277357U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762439A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | Device for automatically generating sealing force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20161231 |